64%Good matchSpace Simulation Toolkit
79%39979% positive reviews, Mostly Positive across 399 reviews·Sandbox · Physics
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An early-stage FPS/TPS prototype exploring custom gravity on a spherical planet. Move freely across the planet surface, switch between first-person and third-person perspectives, and observe how movement, orientation, and the rotating sky respond to non-traditional gravity.
Project Big Sphere
SteamThis project is an early-stage FPS/TPS prototype focused on experimenting with custom gravity simulation on a spherical environment.

Players can freely move across a small planet surface while gravity dynamically adjusts to the character’s position. The experience allows switching between first-person and third-person perspectives to observe how movement and camera behavior change under non-traditional gravity.
Current features include:
This project is currently a technical and experimental build. It does not yet include combat, objectives, progression systems, or structured gameplay, and is intended as a foundation for future development.
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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